21 8 2014 FLEXWELL district heating cable FHK Subject to technical changes Information for underground construction Technical regulations standards information on execution 5 545 Technical regulations standards The following standards regulations and guidelines should be observed as a minimum when carrying out underground construction work for FLEX W E L L district heating cable DI N 1072 Road and path bridges load assumptions DIN 4033 Drainage ducts and conduits made of prefabricated pipes guidelines on execution DIN 4124 Construction pits and trenches embankments working space widths timbering DIN 18300 VOB Part C General technical regulations earthworks DIN 18303 VOB Part C General technical regulations cladding work in construction pits DIN 18304 VOB Part C General technical regulations piling work DIN 18305 VOB Part C General technical regulations dewatering work DIN 18307 VOB Part C General technical regulations gas and water pipework in the ground DIN 18308 VOB Part C General technical regulations drainage work DIN 18320 VOB Part C General technical regulations landscaping work DIN 18330 VOB Part C General technical regulations brickwork DIN 18337 VOB Part C General technical regulations sealing against water not exerting pressure DIN 18354 VOB Part C General technical regulations asphalting work Code of practice Securing pipe trenches and construction pits1 Information sheet on infilling pipe trenches2 Accident prevention regulations The trench widths B indicated in the table on worksheet FHK 5 550 are recommended values However they do not release those engaged in underground construction work from the duty of diligence in respect of accident prevention regulations or of the aforementioned standards and regulations Information on execution The minimum distances from external supply lines stated in worksheet FHK 5 585 must be respected Underground construction data for through connections see worksheet FHK 5 565 for T pieces FHK 5 570 1 Employers Liability Insurance Association of the Construction Industry 2 Research Society for Roadbuilding Underground Working Group Maastrichter Str 45 50672 Cologne

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